Zero exercise is not enough. Going for a walk every day is probably a good thing. And if you're training for a marathon, you'll be on your feet for a couple hours of hard workouts every week. But what is the benchmark for a human being just trying to squeeze enough healthy exercise into their life? Let's break it down.

We all know exercise is necessary, but if you don't like your routine, it's easy to give up. Let's talk about fitness routines we've been able to stick to, and see if we can inspire each other.